CN101868080B - Circuit of portable signal lamp - Google Patents
Circuit of portable signal lamp Download PDFInfo
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- CN101868080B CN101868080B CN200910106721XA CN200910106721A CN101868080B CN 101868080 B CN101868080 B CN 101868080B CN 200910106721X A CN200910106721X A CN 200910106721XA CN 200910106721 A CN200910106721 A CN 200910106721A CN 101868080 B CN101868080 B CN 101868080B
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 11
- 229910052744 lithium Inorganic materials 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to a circuit of a portable signal lamp, which comprises a control circuit, an LED (light-emitting diode) constant-current drive circuit connected to the output terminal of the control circuit, an LED module connected to the LED constant-current drive circuit, and batteries for providing electric energy for the control circuit, the LED constant-current drive circuit and the LED module, and is characterized in that the control chip of the control circuit is particularly a single-chip with the range of the working voltage thereof being DC2.5V to DC6V (direct current). Compared with the circuit of the portable signal lamp, which adopts an MC14017B chip with the range of the working voltage thereof being 3.0V to 18.0V, as the control chip of the circuit in the prior art, the invention can prolong the working life of the circuit of the portable signal lamp and further prolong the working life of the signal lamp by implementing the circuit of the portable signal lamp, particularly using the single-chip with the range of the working voltage thereof being DC2.5V to DC6V as the control chip of the circuit of the portable signal lamp; moreover, by using the single-chip as the control chip, the control program can be changed according to the requirements of controlled lamps, thus meeting various requirements.
Description
Technical field
The present invention relates to signal lamp, more particularly, relate to a kind of circuit of portable signal lamp.
Background technology
Portable signal lamp is railway or field work personnel's routine equipment.Because this class signal lamp is applied to outdoor or open-air occasion usually, expect that therefore its supplying cell can tie up the continuous long operating time.
For example, a kind of circuit of portable signal lamp is arranged in the prior art, its control circuit adopts the MC14017B chip as control chip, its operating voltage range is at 3.0V-18.0V (direct current), and be that the battery ceiling voltage that control circuit is powered is 3.7V, the supply power voltage of battery will soon be lower than the minimum operating voltage 3V of MC14017B chip, and the service time of battery is very short.
For the problems referred to above, except selecting suitable battery, such as high-quality, high capacity cell, be necessary to make further improvements in the circuit of portable signal lamp design.
Summary of the invention
The technical problem to be solved in the present invention is, for the short defective of the circuit of portable signal lamp service time of battery of prior art, provides a kind of circuit of portable signal lamp, can prolong the operating time of circuit of portable signal lamp battery.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of circuit of portable signal lamp, comprise: control circuit, the LED constant-current drive circuit that links to each other with described control circuit output, the LED module that links to each other with described constant-current drive circuit, and the battery that electric energy is provided for described control circuit, described LED constant-current drive circuit and described LED module, it is characterized in that, the control chip of described control circuit is: single-chip microcomputer, the operating voltage range of described single-chip microcomputer are direct current 2.5V～6V.
In circuit of portable signal lamp of the present invention, described circuit of portable signal lamp also comprises: the control signal input circuit, be used for to described single-chip microcomputer input control signal, described single-chip microcomputer is controlled the show state of described LED module according to the control signal of described control signal input circuit input;
Described control signal comprises: touch potential is or/and the button degree.
In circuit of portable signal lamp of the present invention, described circuit of portable signal lamp also comprises: the battery status indicating circuit;
Described battery status indicating circuit is connected with described battery, is used to indicate the state of described battery, when the supply power voltage of described battery during less than 3V, sends the low index signal that needs charging of battery electric quantity.
In circuit of portable signal lamp of the present invention, described circuit of portable signal lamp also comprises: battery charging management circuit;
Described battery charging management circuit is connected with the external charging power supply with described battery, is used at described external charging power supply the charging voltage of described battery during greater than reference voltage, being cut off described external charging power supply to the charging of described battery.
In circuit of portable signal lamp of the present invention, described circuit of portable signal lamp also comprises: anti-clutter circuit;
Described anti-clutter circuit one end ground connection, an end are connected with described single-chip microcomputer, are used for preventing that external signal is to the interference of described circuit of portable signal lamp.
In circuit of portable signal lamp of the present invention, described LED constant-current drive circuit comprises: the first constant-current drive circuit and the second constant-current drive circuit; Described LED module comprises: a LED module and the 2nd LED module; Described the first constant-current drive circuit is connected with a described LED module, and described second drive circuit is connected with described the 2nd LED module;
The show state of described LED module comprises four kinds of show states; The first show state is that the LED lamp in a described LED module and described the 2nd LED module is all bright;
The second show state is that the LED lamp in the described LED module is bright, and the LED lamp in described the 2nd LED module puts out;
The 3rd show state is that the LED lamp in the described LED module puts out, and the LED lamp in described the 2nd LED module is bright;
The 4th show state is that the LED lamp in a described LED module and described the 2nd LED module all puts out.
In circuit of portable signal lamp of the present invention, described battery is lithium battery.
In circuit of portable signal lamp of the present invention, described single-chip microcomputer is the PIC12C508A single-chip microcomputer.
In circuit of portable signal lamp of the present invention, the end pin 4 of described single-chip microcomputer is connected with the positive pole of described battery by resistance (R5); Described control signal input circuit is connected between described resistance (R5) and the anode for the switch detection circuit of a button is only arranged; Described the first constant-current drive circuit comprises a QX7136LED constant-flow driver (U4), the first switching tube (Q1) and a LED current sampling resistor (R8 and R9), resistance (R7), the base stage of described the first switching tube (Q1) is connected with the end pin 7 of described single-chip microcomputer by described resistance (R7); Described second drive circuit comprises the 2nd QX7136LED constant-flow driver (U3), second switch pipe (Q1) and a LED current sampling resistor (R10 and R11), resistance (R6), the base stage of described second switch pipe (Q2) is connected with the end pin 6 of described single-chip microcomputer by described resistance (R6).
In circuit of portable signal lamp of the present invention, described anti-clutter circuit comprises: electric capacity (C2) and electric capacity (C3) in parallel, an end ground connection, the end pin 1 of a termination single-chip microcomputer.
Implement circuit of portable signal lamp of the present invention, has following beneficial effect: because to have adopted operating voltage range be that the single-chip microcomputer of direct current 2.5V～6V is as the control chip of circuit of portable signal lamp, with respect to operating voltage range in the prior art at the control chip of 3.0V-18.0VMC14017B chip as circuit of portable signal lamp, can prolong the operating time of circuit of portable signal lamp, thereby prolong the operating time of signal lamp.And single-chip microcomputer can change control program according to the demand of controlled light fixture as control chip, can meet the different needs.
Further, because circuit of portable signal lamp provided by the invention also comprises the control signal input circuit, single-chip microcomputer can be controlled the show state of signal lamp according to the control signal of control signal input circuit input, can satisfy on-the-spot complex situations to the demand of railway signal lamp, realize the control mode that a lamp is multiplex.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is circuit of portable signal lamp block diagram of the present invention;
Fig. 2 is circuit of portable signal lamp schematic diagram according to an embodiment of the invention.
Embodiment
Fig. 1 is circuit of portable signal lamp block diagram of the present invention.As shown in Figure 1, circuit of portable signal lamp of the present invention comprises power circuit, control circuit 10, control signal input circuit 12, a LED constant-current drive circuit 20a, the 2nd LED constant-current drive circuit 20b, a LED module 22a and the 2nd LED module 22b.Wherein, the input of a LED constant-current drive circuit 20a and the 2nd LED constant-current drive circuit 20b links to each other with the control circuit output; The one LED module 22a links to each other with the first and second LED constant- current drive circuit 20a, 20b output respectively with the 2nd LED module 22b.Control signal input circuit 12 links to each other with the input of control circuit 10, is used for input control signal.Although need to prove two groups of LED constant-current drive circuits and LED module have been shown among Fig. 1, but know as is known to the person skilled in the art, also can only have one group of LED constant-current drive circuit and LED module in the portable signal lamp of the present invention, perhaps can have three groups, four groups etc.
Power circuit provides electric energy for circuit of portable signal lamp, and it comprises lithium battery 30, battery charging management circuit 32, battery status indicating circuit 36.Wherein, battery status indicating circuit 36 is connected with lithium battery 30, is used to indicate the state of battery, and when the supply power voltage of battery during less than predetermined threshold, sends the low index signal that needs charging of battery electric quantity.Battery charging management circuit 32 is connected with the external charging power supply with lithium battery 30 and is connected, and the charging voltage that is used for 40 pairs of lithium batteries 30 of charge power supply is externally cut off the charging of 40 pairs of lithium batteries of external charging power supply during greater than reference voltage.
In one embodiment of this invention, the ceiling voltage of lithium battery 30 is 3.7V, and the control chip of control circuit 10 is single-chip microcomputers, and the operating voltage range of this single-chip microcomputer is direct current 2.5V～6V.It will be understood by those skilled in the art that open battery in the circuit of portable signal lamp of the present invention in lithium battery, also can adopt the battery of other type.
In one embodiment of this invention, above-mentioned single-chip microcomputer is according to the control signal control LED module 22a of control signal input circuit 12 inputs, the show state of 22b.For example, in the embodiment with two groups of LED constant-current drive circuits and LED module, the show state of LED module comprises four kinds of show states; The first show state is that the LED lamp among a LED module 22a and the 2nd LED module 22b is all bright; The second show state is that the LED lamp among the LED module 22a is bright, and the LED lamp among the 2nd LED module 22b puts out; The 3rd show state is that the LED lamp among the LED module 22a puts out, and the LED lamp among the 2nd LED module 22b is bright; The 4th show state is that the LED lamp among a LED22a module and the 2nd LED module 22b all puts out.
As a kind of selection, control signal input circuit 12 can adopt key circuit to realize.As another selection, control signal input circuit 12 can also adopt the wave point control circuit to realize, for example adopts Infrared remote controller and the infrared remote-controlled signal receiving circuit that is installed on the tally circuit is realized.
Fig. 2 is circuit of portable signal lamp schematic diagram according to an embodiment of the invention.As shown in Figure 2, control circuit 10 adopts single-chip microcomputer as control chip, portable signal lamp is carried out logic control, this single-chip microcomputer is selected PIC12C508A, its operating voltage range is 2.5V-5.5V (direct current), can keep signal lamp work until cell voltage is down to 2.5V, thereby has prolonged service time of battery, improved the battery utilance, the operating time of signal lamp is prolonged.
In the present embodiment, adopt chargeable lithium cell 30 as the lamp interior power supply, in battery charging management circuit 32, Q3 is charging control metal-oxide-semiconductor, compare by comparator U1A with resistance R 4 and the reference voltage that D4 forms after external charging voltage process resistance R 3 and the R13 dividing potential drop, the B utmost point of comparator U1A-1 pin output voltage control triode (for example 3904 triodes) Q6 relatively, thereby the G utmost point of control field effect transistor (IRLML6401) Q3, can manage the battery charging, prevent from overcharging.When voltage was lower than 2.5V, single-chip microcomputer started the power-off protection program, and the power supply of the circuit of cutting off the electricity supply guarantees that battery only puts.
Battery status indicating circuit 36 during less than or equal to 3V, sends the low charging index signal that needs of battery electric quantity at cell voltage.Wherein, cell voltage compares by comparator U1B with the reference voltage that forms by resistance R 16, R17 dividing potential drop by resistance R 14 and the sampling of R15 bleeder circuit, and comparator U1B-7 pin is the B utmost point of output voltage control triode Q5 relatively, carries out state and shows.
The 4th end pin of single-chip microcomputer links to each other with the positive pole of lithium battery 30 by resistance R 5 and control signal input circuit 12, the 8th end pin ground connection, the 6th links to each other with two branch roads of LED constant-current drive circuit 20 (comprising a LED constant-current drive circuit 20a and the 2nd LED constant-current drive circuit 20b) respectively with the 7th end pin.Switching tube Q1 in the LED constant-current drive circuit 20 in each branch road or the collector electrode of Q2 are connected with the second pin of constant-flow driver, and base stage is connected grounded emitter with the 6th or the 7th end pin of single-chip microcomputer.Resistance R 8, R9, R10, R11 are the sampling resistor of LED electric current, sampled voltage is fed back to the QX7136 constant-flow driver, the QX7136 constant-flow driver is according to CS pin sampled voltage, adjusts innerly to transfer stream metal-oxide-semiconductor channel resistance, thereby adjusts among LED module 22a, the 22b electric current by LED.The voltage input end of the constant-flow driver in the described constant-current circuit (three-prong Vdd (power supply input pin anode)) links to each other with the positive pole of power circuit.
Control signal input circuit 12 has the switch that touches with auto-lock function by one to be realized.Described single-chip microcomputer the 4th end pin is the sampling of switch (being button) state, and the program in the single-chip microcomputer is judged touching with auto-lock function, and corresponding output logic control voltage, thereby realizes that the operator needs.For example, control signal can comprise: touch potential is or/and the button degree.
In the present embodiment, also for single-chip microcomputer is provided with an anti-clutter circuit 18, it comprises capacitor C 3 and C2.As shown in Figure 2, capacitor C 2, the C3 ground connection of the voltage of single-chip microcomputer input first end pin VDD by being connected in parallel can prevent effectively that railroader's intercom is to the interference of light fixture.
In addition, this single-chip microcomputer can also carry out second development and utilization according to the demand of controlled light fixture, such as LED DISPLAY ORDER etc. new demand is arranged, and can satisfy new demand by the change Single Chip Microcomputer (SCM) program; Can make up multiple display logic, can also according to sampling by 5 pairs of light fixture states of single-chip microcomputer end pin, logic be made adjustment etc.
Circuit of portable signal lamp provided by the invention adopts single-chip microcomputer that signal circuit is carried out logic control, and after switch motion carried out sampling analysis, realizes logic control, and then avoid occurring logical miss, and is simple and reliable; Simultaneously, adopt this single-chip microcomputer can reduce circuit element, simplified circuit structure, reduced cost of manufacture.This light fixture shows 4 kinds of different show states, can be applied to require the operational environment of complicated directive command.
Claims (7)
1. circuit of portable signal lamp, comprise: control circuit, the LED constant-current drive circuit that links to each other with described control circuit output, the LED module that links to each other with described constant-current drive circuit, and the battery that electric energy is provided for described control circuit, described LED constant-current drive circuit and described LED module, it is characterized in that the control chip of described control circuit is: single-chip microcomputer, the operating voltage range of described single-chip microcomputer are direct current 2.5V～6V; Described single-chip microcomputer is the PIC12C508A single-chip microcomputer; The end pin 4 of described single-chip microcomputer is connected with the positive pole of described battery by the first resistance (R5); The control signal input circuit is for only there being the switch detection circuit of a button, be connected between described the first resistance (R5) and the anode, to described single-chip microcomputer input control signal, described single-chip microcomputer is controlled the show state of described LED module according to the control signal of described control signal input circuit input; Described control signal comprises: touch potential is or/and the button degree; The LED constant-current drive circuit comprises the first constant-current drive circuit and the second constant-current drive circuit; Described LED module comprises: a LED module and the 2nd LED module; Described the first constant-current drive circuit is connected with a described LED module, and described the second constant-current drive circuit is connected with described the 2nd LED module; Described the first constant-current drive circuit comprises a QX7136LED constant-flow driver (U4), the first switching tube (Q1) and a LED current sampling resistor (R8, R9), the 3rd resistance (R7), and the base stage of described the first switching tube (Q1) is connected with the end pin 7 of described single-chip microcomputer by described the 3rd resistance (R7); Described the second constant-current drive circuit comprises the 2nd QX7136LED constant-flow driver (U3), second switch pipe (Q2) and the 2nd LED current sampling resistor (R10, R11), the second resistance (R6), and the base stage of described second switch pipe (Q2) is connected with the end pin 6 of described single-chip microcomputer by described the second resistance (R6).
2. circuit of portable signal lamp according to claim 1 is characterized in that, described circuit of portable signal lamp also comprises: the battery status indicating circuit;
Described battery status indicating circuit is connected with described battery, is used to indicate the state of described battery, when the supply power voltage of described battery during less than 3V, sends the low index signal that needs charging of battery electric quantity.
3. circuit of portable signal lamp according to claim 2 is characterized in that, described circuit of portable signal lamp also comprises: battery charging management circuit;
Described battery charging management circuit is connected with the external charging power supply with described battery, is used at described external charging power supply the charging voltage of described battery during greater than reference voltage, being cut off described external charging power supply to the charging of described battery.
4. circuit of portable signal lamp according to claim 3 is characterized in that, described circuit of portable signal lamp also comprises: anti-clutter circuit;
Described anti-clutter circuit one end ground connection, an end are connected with described single-chip microcomputer, are used for preventing that external signal is to the interference of described circuit of portable signal lamp.
5. circuit of portable signal lamp according to claim 4 is characterized in that, the show state of described LED module comprises four kinds of show states; The first show state is that the LED lamp in a described LED module and described the 2nd LED module is all bright;
The second show state is that the LED lamp in the described LED module is bright, and the LED lamp in described the 2nd LED module puts out;
The 3rd show state is that the LED lamp in the described LED module puts out, and the LED lamp in described the 2nd LED module is bright;
The 4th show state is that the LED lamp in a described LED module and described the 2nd LED module all puts out.
6. circuit of portable signal lamp according to claim 5 is characterized in that, described battery is lithium battery.
7. circuit of portable signal lamp according to claim 4 is characterized in that, described anti-clutter circuit comprises: the first electric capacity (C2) and the second electric capacity (C3) in parallel, an end ground connection, the end pin 1 of a termination single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910106721XA CN101868080B (en) | 2009-04-14 | 2009-04-14 | Circuit of portable signal lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910106721XA CN101868080B (en) | 2009-04-14 | 2009-04-14 | Circuit of portable signal lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101868080A CN101868080A (en) | 2010-10-20 |
| CN101868080B true CN101868080B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910106721XA Expired - Fee Related CN101868080B (en) | 2009-04-14 | 2009-04-14 | Circuit of portable signal lamp |
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| CN (1) | CN101868080B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853480A (en) * | 2015-03-31 | 2015-08-19 | 付志民 | Medical examining lamp circuit |
| CN111148327B (en) * | 2019-12-31 | 2022-08-02 | 广州星际悦动股份有限公司 | Charging indicator lamp control device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2829280Y (en) * | 2005-11-04 | 2006-10-18 | 乐清市亿昊科技发展有限公司 | Circuit device of miner's lamp |
| CN101144573A (en) * | 2007-10-16 | 2008-03-19 | 南京农业大学 | A LED light source system with flexible and adjustable spectrum |
-
2009
- 2009-04-14 CN CN200910106721XA patent/CN101868080B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2829280Y (en) * | 2005-11-04 | 2006-10-18 | 乐清市亿昊科技发展有限公司 | Circuit device of miner's lamp |
| CN101144573A (en) * | 2007-10-16 | 2008-03-19 | 南京农业大学 | A LED light source system with flexible and adjustable spectrum |
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| Publication number | Publication date |
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| CN101868080A (en) | 2010-10-20 |
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